646650616 has 16 divisors (see below), whose sum is σ = 1213185600. Its totient is φ = 323134464.

The previous prime is 646650611. The next prime is 646650619. The reversal of 646650616 is 616056646.

646650616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646650611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8905 + ... + 37048.

It is an arithmetic number, because the mean of its divisors is an integer number (75824100).

Almost surely, 2^646650616 is an apocalyptic number.

It is an amenable number.

646650616 is a deficient number, since it is larger than the sum of its proper divisors (566534984).

646650616 is a wasteful number, since it uses less digits than its factorization.

646650616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47718 (or 47714 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 646650616 is about 25429.3259053401. The cubic root of 646650616 is about 864.7486616491.

The spelling of 646650616 in words is "six hundred forty-six million, six hundred fifty thousand, six hundred sixteen".